From 4036495680279807861 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: f78e5,f2c1f2d35538dfd4 X-Google-Attributes: gidf78e5,public From: seurer@rchland.ibm.com (Bill Seurer) Subject: Re: Where is aliasing described in draft standard Date: 1997/02/26 Message-ID: <5evhdv$1csq@news.rchland.ibm.com>#1/1 X-Deja-AN: 221687179 References: <331280fa.208770203@news.scruznet.com> X-Original-Date: 25 Feb 1997 20:18:07 GMT Organization: IBM Rochester MN X-Auth: PGPMoose V1.1 PGP comp.std.c++ Reply-To: "Bill Seurer" Newsgroups: comp.std.c++ Originator: austern@isolde.mti.sgi.com The proposed ANSI C++ standard (April 1995 working paper, section 5.0, paragraph 13) has this to say about aliasing: If the program attempts to access the stored value of an object through an lvalue of other than one of the following types the behavior is undefined: 1.the dynamic type of the object, 2.a cv-qualified version of the declared type of the object, 3.a type that is the signed or unsigned type corresponding to the declared type of the object, 4.a type that is the signed or unsigned type corresponding to a cv-qualified version of the declared type of the object, 5.an aggregate or union type that includes one of the aforementioned types among its members (including, recursively, a member of a subaggregate or contained union), 6.a type that is a (possibly cv-qualified) base class type of the declared type of the object, 7.a char or unsigned char type. -- - Bill Seurer ID Tools and Compiler Development IBM Rochester, MN BillSeurer@vnet.ibm.com BillSeurer@aol.com Home page: http://members.aol.com/BillSeurer --- [ comp.std.c++ is moderated. To submit articles: Try just posting with your newsreader. If that fails, use mailto:std-c++@ncar.ucar.edu comp.std.c++ FAQ: http://reality.sgi.com/austern/std-c++/faq.html Moderation policy: http://reality.sgi.com/austern/std-c++/policy.html Comments? mailto:std-c++-request@ncar.ucar.edu ]